Dear Mohiders,
I am having a little doubt concerning the use of boxes in the Lagrangian Module.
In fact, I would like to modelize the expansion of a virus, and this virus would be in diferent carriers (fish, plankton,...). There would be three carriers: one by plankton, one by fishes, and the other one would represent the virus as a particle itself.
For that, I know the place of the origin of the emission, I would like to make a origin box with the dimensions 30*30*15 metres.The three type of boxes would have this same box origin, and then they will have a diferent evolution because of their difference in concentration ect...

My doubt is about how to do that?!!! In fact, I have begun doing my lagrangian module. will the 3 boxes have the same begin origin? (I imagine yes), and then I have to write box number : 3, and make 3 properties bloks?

!Eleccion del modeladoMOVEMENT : NotRandomCOMPUTE_AGE : 1DENSITY_METHOD : 3 !constanteKILL_LAND_PARTICLES : 1 !Kills particles which are located in a Waterpoint which is not a OpenPoint MANTAIN_REALTIVE_POSITION : 0 !Check is the user wants to maintain the vertical relative position of the originOLD : 0

Another questions:
- how do I make the PARTIC_BOX (the origin box? with mohid gis...?)
- what is the function of the BOX_FLUXES keyword?
- what is the name keyword to put for a virus? particulate contaminant?
- Is there a keyword to ,ak a particle duplicate (not in volume, duplication like baterias...)?

From what I've understood you can define 3 properties in one origin where the emission of particles is made from blocks.
My question is, what makes the fish, plankton and virus take different positions? because this way, they will share the same lagrangian tracer... not sure if I was clear.

Hi luis,
Thanks for your fast reply.
In fact, I want to model the expansion of virus through 3 different ways because there is not yet a clear demonstration of how it evolues, and these three ways of expansion( the virus in the fish, the virus in the faeces ans the virus only as a particle) seem to be th three principal vectors of transmission...
With this thought, I would write sthg like that in my lagrangian module:

This way, there will be three origin boxes with one type of particle in each box (with three different colours)?

Another question: I am doing for the moment test with one of the three particles, in order to remove all the error prior to launch my complete model.
I am running my model with only the first property, and I get always a hdf file which I can open, and all works good, and when I try to open my lagrangian file, nothing happens, the particles are not on the screen...
Can you help me?